*
    margin 0
    padding 0

html,body
    font-size 20px
    height 100%
    width 100%

.music
    width 100%
    height 100%
    color #fff
    position relative
    &::after
        content ''
        position absolute
        top 0
        left 0
        right 0
        bottom 0
        display block
        filter blur(4px)
        background url(https://i.loli.net/2021/05/09/13r2KECdioq8gbP.jpg)
        background-size cover
        overflow hidden
        z-index -1